UPDATE (2:50 p.m. on Wednesday): The Sharks have signed 31-year-old San Jose State alum Ryan Lowe to a pro tryout. Lowe, who last played professionally in Australia and also got into one game with the ECHL's Utah Grizzlies in 2007-08, will back up Antti Niemi on Wednesday.

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SAN JOSE -– The Sharks are in a frantic search for a backup to Antti Niemi just hours before they are to host the Calgary Flames on Wednesday night at SAP Center.

Backup Troy Grosenick suffered an upper body injury in practice on Tuesday and is unavailable, per head coach Todd McLellan. Alex Stalock, who is on injured reserve, took part in the morning skate for the first time since a lower body injury forced him onto injured reserve, but is still not ready to dress.

McLellan said: “[Niemi] will start and Alex Stalock is still on IR. Troy is injured and we’re in an emergency type situation where we’re trying to get a goaltender in.”

“There’s a lot of scrambling going on this morning. Our first concern was Troy’s health. He didn’t have a good night last night, so the doctors have to look at him. He was ruled out immediately. After that, immediately we look to Worcester, and there’s just no way we’re going to get a goaltender in because of the travel across the country. Then, it’s, ‘OK, who’s available? Who’s around here who could play?’ That’s still being worked on.

“[Sharks asst. general manager] Wayne Thomas has done a tremendous job of working the phones and doing a good job this morning managing that situation.”

An announcement is expected later on Wednesday.

Calgary broadcaster and longtime NHL goalie Kelly Hrudey joked to McLellan that he’d be ready to suit up, in a funny back-and-forth.

McLellan noted that Hrudey would “have to take a pay cut to come back and play.” Hrudey replied: “I just need my own dressing room so nobody sees my body.”

Hrudey spent 15 seasons in the NHL with the Islanders, Kings, and two seasons with the Sharks, wrapping up his career in 1997-98 with San Jose.